Problem with the size of object in the blender interface after changing to a bigger monitor
In order to enlarge the cursor size, font size and the overall windows, you can always go to User Preferences by pressing CTRL+ALT+U or by navigating through File drop-down menu. You will find many options there. Two such options are depicted below. Scale your blender Windows accordingly and check on Large Cursors. Navigate through other options and you will eventually get a good view of the cursor and Windows. Alternatively, you can also use Windows Magnifier to see Whats there on the screen from a fairly far distance. Don't forget to Save changes.